Inhibition of halide oxidation and deprotonation of organic cations with dimethylammonium formate for air-processed p–i–n perovskite solar cells

Hongguang Meng, Kaitian Mao, Fengchun Cai, Kai Zhang, Shaojie Yuan, Tieqiang Li, Fangfang Cao, Zhenhuang Su, Zhengjie Zhu, Xingyu Feng, Wei Peng, Jiahang Xu, Yan Gao, Weiwei Chen, Chuanxiao Xiao, Xiaojun Wu, Michael D. McGehee and Jixian Xu ()
Additional contact information
Hongguang Meng: University of Science and Technology of China
Kaitian Mao: University of Science and Technology of China
Fengchun Cai: University of Science and Technology of China
Kai Zhang: Hefei National Research Center for Physical Sciences at the Microscale
Shaojie Yuan: University of Science and Technology of China
Tieqiang Li: University of Science and Technology of China
Fangfang Cao: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
Zhenhuang Su: Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences
Zhengjie Zhu: University of Science and Technology of China
Xingyu Feng: University of Science and Technology of China
Wei Peng: University of Science and Technology of China
Jiahang Xu: University of Science and Technology of China
Yan Gao: University of Science and Technology of China
Weiwei Chen: University of Science and Technology of China
Chuanxiao Xiao: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
Xiaojun Wu: University of Science and Technology of China
Michael D. McGehee: University of Colorado
Jixian Xu: University of Science and Technology of China

Nature Energy, 2024, vol. 9, issue 5, 536-547

Abstract: Abstract The manufacturing of perovskite solar cells under ambient conditions is desirable, yet the efficiency of p–i–n perovskite solar cells fabricated in air still lags behind those made in an inert atmosphere. Here we introduce an ionic pair stabilizer, dimethylammonium formate (DMAFo), into the perovskite precursor solution to prevent the degradation of perovskite precursors. DMAFo inhibits the oxidization of iodide ions and deprotonation of organic cations, improving the crystallinity and reducing defects in the resulting perovskite films. We show the generation of additional p-type defects during ambient air fabrication that suggests the need for improving bulk properties of the perovskite film beyond surface passivation. Upon addition of DMAFo, we demonstrate that the efficiency of inverted p–i–n solar cells based on perovskite layers with 1.53-eV and 1.65-eV bandgaps fabricated under ambient conditions (25–30 °C, 35–50% relative humidity) increases by 15–20%. We achieve a certified stabilized efficiency of 24.72% for the 1.53-eV cell, on a par with state-of-the-art counterparts fabricated in an inert atmosphere.

Date: 2024
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41560-024-01471-4 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:9:y:2024:i:5:d:10.1038_s41560-024-01471-4

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-024-01471-4

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().